diff options
Diffstat (limited to 'sql/opt_range.cc')
| -rw-r--r-- | sql/opt_range.cc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sql/opt_range.cc b/sql/opt_range.cc index 100b900e50d..ef6192509fd 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -83,7 +83,12 @@ static int sel_cmp(Field *f,uchar *a,uchar *b,uint8 a_flag,uint8 b_flag); -static uchar is_null_string[2]= {1,0}; +/* + this should be long enough so that any memcmp with a string that + starts from '\0' won't cross is_null_string boundaries, even + if the memcmp is optimized to compare 4- 8- or 16- bytes at once +*/ +static uchar is_null_string[20]= {1,0}; class RANGE_OPT_PARAM; /* |